2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 395Get this manual
REAR WHEELSUSPENSION
TROUBLESHOOTING
Rear wheel wobbling
Bent rim
Worn or damaged knuckle bearing Faulty tire
Wheel hub nut not tightened properly
Loose rear suspension fasteners
Steers to one side or does not track straight
Unequal tire pressure Bent suspension arm or frame